Prosecution Insights
Last updated: July 17, 2026
Application No. 18/892,083

MEASUREMENT OF INSULATION RESISTANCE OF AN ELECTRICAL INSULATOR

Non-Final OA §101
Filed
Sep 20, 2024
Priority
Mar 23, 2022 — GB 2204058.8 +1 more
Examiner
GONZALEZ, MILTON
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Megger Instruments Ltd.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
7m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
502 granted / 645 resolved
+9.8% vs TC avg
Moderate +12% lift
Without
With
+12.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
23 currently pending
Career history
661
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
73.0%
+33.0% vs TC avg
§102
9.9%
-30.1% vs TC avg
§112
8.5%
-31.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 645 resolved cases

Office Action

§101
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Drawings The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they do not include the following reference sign(s) mentioned in the description: 39 (see paragraph [0060]). Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they include the following reference character(s) not mentioned in the description: 58c, 59c, 60c, 61c, 58d, 60d, 61d, 58e, 59e, 60e, 61e (Figure 9). Corrected drawing sheets in compliance with 37 CFR 1.121(d), or amendment to the specification to add the reference character(s) in the description in compliance with 37 CFR 1.121(b) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 17 and 18 are rejected under 35 U.S.C. 101 because the claimed invention is directed to non-statutory subject matter. In claims 17 and 18, line 1, --non-transitory-- should be added before “computer-readable”. The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Kronenberger (US 11,175,328) discloses a testing apparatus and method for detecting insulation resistance. Werelius et al. (US 9,110,117) discloses a system and method for detecting voltage dependence in insulation systems based on harmonic analysis. Coffeen et al. (US 7,061,253) discloses a system and method for testing polymer insulators. Yamanaka et al. (US 6,859,023) discloses a method for evaluating an insulating film. Allowable Subject Matter Claims 1-16 are allowed. The following is an examiner’s statement of reasons for allowance: The primary reason for allowance of claims 1 and 14 is the inclusion of for each iteration, determining a threshold of a first category for the at least one sample representing current measured in the iteration by processing at least one sample measured for the respective iteration and samples measured for a plurality of previous iterations; and stopping increasing the voltage applied to the electrical insulator in response to the at least one sample representing current measured in the iteration exceeding the determined threshold of the first category for the respective iteration. These limitations in combination with the rest of the limitations in the claim are neither disclosed nor suggested by the prior art of record. Claims 2-13, 15, and 16 have been found allowable due to their dependencies upon claim 1 and 14, respectively. Claims 17 and 18 would be allowable for the above reasons if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 101, set forth in this Office action. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to MILTON GONZALEZ whose telephone number is (571)270-7914. The examiner can normally be reached 8:00 AM - 5:00 PM. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, WALTER LINDSAY can be reached at (571) 272-1674. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /WALTER L LINDSAY JR/Supervisory Patent Examiner, Art Unit 2852 /M.G/Examiner, Art Unit 2852 6/30/2026
Read full office action

Prosecution Timeline

Sep 20, 2024
Application Filed
Jul 02, 2026
Non-Final Rejection mailed — §101 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
78%
Grant Probability
90%
With Interview (+12.5%)
2y 5m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 645 resolved cases by this examiner. Grant probability derived from career allowance rate.

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